US Bridges

SW Lucas-Hunt RD over NS RR

PoorPosted for load

St. Louis County, Missouri · S 18 T 46 N R 7 E · Structure no. 15559

Built
1973
52 years old
Condition
Poor
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
100 ft
1 main span
Daily traffic
12,342
2024 count
Owner
County
County Highway Agency

About this bridge

SW Lucas-Hunt RD over NS RR is a steel stringer/multi-beam or girder carrying SW Lucas-Hunt RD over NS RR in St. Louis County, Missouri. It was built in 1973, so it is 52 years old, older than the Missouri average of 45.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.

It carries about 12,342 vehicles a day, roughly 10% of them trucks, projected to reach 16,662 by 2044. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSW Lucas-Hunt RD
CrossesNS RR
LocationS 18 T 46 N R 7 E
RouteCounty Highway 0
CountySt. Louis County
StateMissouri
Coordinates38.72868, -90.26991
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98.2 US tons
Inventory rating60.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length100 ft (30.5 m)
Longest span94 ft (28.7 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic12,342 (2024)
Projected traffic16,662 by 2044
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.2 million (2025 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SW Lucas-Hunt RD over NS RR built?

It was built in 1973, making it 52 years old in 2025.

What condition is SW Lucas-Hunt RD over NS RR in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2024.

How much traffic does SW Lucas-Hunt RD over NS RR carry?

About 12,342 vehicles per day (2024 count), of which roughly 10% are trucks.

How long is SW Lucas-Hunt RD over NS RR?

The structure is 100 ft (30.5 m) long with a longest span of 94 ft (28.7 m) and a deck 32 ft wide.

Who owns SW Lucas-Hunt RD over NS RR?

It is owned by the County Highway Agency.